Thursday, January 31, 2019

A complaint, reviews, and how to prepare for the exam


Professor,

I’m having a hard time understanding how you set up the homework assignments for the week (I thought homework was due the next week after we covered it). A few days ago you said 10.5 would be due on Friday, and there were some other miscellaneous chapters that needed to be removed. Today I log on to start 10.5 to finish it before the due date tomorrow, and now there are not only 3 assignments due tomorrow night, but two more assignments due 2 days later on the 3rd, and our exam is on the 6th. I feel like I’m doing my due diligence to keep up with what needs to be completed, but it’s not fair that you added these assignments out of nowhere. I’m only frustrated because I thought 10.5 was due this week, and I planned for it, now there are 3 total assignments to complete which will take anywhere from 6-8 hours, and two more assignments due on Sunday, another 4-6 hours, and we’re expected to study for the exam three days later.

The other part that is frustrating is that the due dates aren’t located anywhere else other than webwork (and since the dates have been wrong, I just look at what’s active and what makes sense to what you’ve been teaching in class), I tried to use the syllabus to see what will be due this week because of the webwork errors but could not find anything.

This also happened the other week for me, I logged on to see what would be due and there was 1 assignment from what webwork showed, but when I went to complete it Friday night, you had added another assignment ( which I’m okay with you adding homework but there was no sort of notification to let us know). It’s very frustrating because I’m trying to succeed in the class since I dropped this class last semester in session A, then failed session B.

I feel like the only way to track what assignments are due is to log on to webwork every day to ensure you didn’t make any changes to it. I also read over the syllabus and couldn’t find anything to answer my questions which is why I’m emailing you now.

Syllabus
Homework: Homework will be performed using the (free!) WebWork online homework system (NOT the WebAssign system that accompanies the textbook).   Assignments will be due every Friday at 11:59PM.  No late homework will be accepted.  Homework assignment will reflect the material covered up to the *previous* Friday.  Assignments will be announced in class, here on this website and on your mat267 blog. “

Well, you raise some good points.
So, yes, we've fallen behind, due to my being out sick Wednesday (last week I think), and also my being sick but not out the Monday of that week.  And as you point out there is an exam to be taken next Wednesday.  And while I have some ability to shift the exam material, I think you will understand that it's also not ideal to add very much extra material in addition to that scheduled to the second exam.

Tomorrow I'd like to get input from the class (briefly!) on whether you would prefer to have sections 10.8 and 10.9 on the first test or the second test.

Allow me to bring the very first line of the syllabus to your attention:
Note: All items on this syllabus are subject to change. The instructor reserves the right to modify any of the following (including the dates of the tests) to meet the needs of the class or university policy.  Any in-class announcement, verbal or written, constitutes an official addendum/modification to this syllabus. It is the student responsibility to attend class regularly and to make note of any change. 
I said the very first day of class that we may push up the due dates before the exam, which constitutes an "in class announcement".

Some considerations:

  • I  hadn't changed the due dates other than 10.5, because they were about where they needed to be for the exam.  I changed 10.5 because someone in the class requested it and it was reasonable. 
  •  I understand the frustration though, so in response I've changed the due dates slightly. Perhaps I'll change them again depending on what I decide, based on class feedback, about material to be covered on the exam.
  • I could announce the due dates and their changes on the blog, and I used to do that in the past. What seems to happen is that people wind up looking only at the webwork anyway, so I've fallen out of the habit.  
  • The syllabus also about the studying you must do "continuously throughout the semester,"  which means that it's really a fine idea for you to be looking at the webwork every day.     
  • It looks like I'll only get in one review day for exam one, sorry about that.  My preferred teaching strategy, in response to student feedback over the years, has become is to push a little harder on covering the course material early and then have a couple of review days before the exam.  The university has no policy at all about review, and is fine with teaching new material up the last minute of the last day before the exam, and I did that for years. 
  • Likewise, people usually do better on the exam problems if they've done the homework problems first. I really don't mind having the homework due on Friday after the exam, and I'm happy to go with the class consensus on this. 

Sunday, January 27, 2019

RE: Section 12.8


Section 12.8 - Closes 01/28/2019 at 12:06pm MST

This section seems out of place with regards to its due date. The other sections due this week are all from Chapter 10 and the other Chapter 12 sections are not due until February/March. The other concern I have is the questions assigned to this Section seem far out from the pace we have been going in class and from reading through the book. Is the deadline on this section due to an error?


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Very out of place, since section 12.8 isn't even on the syllabus.  I fixed it.

Friday, January 25, 2019

10.4#5 (Edited)

I still have a question about number 5. It asks:
Find two unit vectors orthogonal to a=⟨−4,1,4⟩ and b=<5, -4, 3>

Enter your answer so that the first non-zero coordinate of the first vector is positive.
I attached my work below so you can see my thought process; however, I keep getting the k coordinates incorrect and I'm not sure where I'm going wrong.
Thank you for you time,
















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It looks to me like you've done it correctly.  BUT, if you click the "Email Instructor" button down at the bottom of the web page of your problem it will give me what you've done and what your numbers are so I can see exactly how and why it's misbehaving.

(Edit)
OK, you did that. Playing around with the webwork, it looks like all it wants is four decimal points instead of three.

Wednesday, January 16, 2019

Tuesday, January 15, 2019

10.3 #14, first pass

Hello Tom!

I am having problems with finding what components of F are perpendicular and parallel to v. My initial answer was that the component -16j is perpendicular to v but the system is telling me I am wrong because "the first and second coordinates are wrong". I rephrased my answer to 0i-16j and to <0, 16> without success. I had similar issues with the parallel components; I started with the answer 0i and the system rejected it, as well as 0i-0j and <0, 0>, with the same message. Am I missing something or is the system being weird?

Thanks!

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OK, you're trying to do something, which experimenting, and that's is a good start. On the other hand you're trying anything you can think of, except maybe a strategy to figure out how to understand what you should do here.


Let me say, I see this a lot. Let me point out though, that your boss is expecting to pay you to figure out the answers to the problems she/he has, and is most definitely not expecting to pay to say "I don't know what to do". In fact you'll be expected to develop information sources on your own, and use them.


So my hint to you is this: Where do you think you could find the information you'll need to understand this problem? In fact here's another hint: what do you suppose those numbers up at the top of the problem could tell you about where to look?


Tell me what you come up with and get back to me, and we'll have another go-round on this.

Monday, January 7, 2019

Welcome to MAT267

Hi All, welcome to your MAT267 blog. You can look here to find assignments, posted scores & estimated grades, questions and answers. I SUGGEST THAT YOU BOOKMARK THIS PAGE, and also subscribe to email updates to this blog in the subscription field to the right.

1) Your Posting ID. Your Posting ID will be used to identify your scores. You should not share your Posting ID or do anything to compromise it's security. To quote from this link:

Posting ID
Your Posting ID is a seven-digit number composed of the last four digits of your ASU ID number plus the last three digits of your Campus ID number, separated by a hyphen. Your Posting ID is printed on the class rosters and grade rosters your professors work with. You can also view your Posting ID on the My Profile tab in My ASU.

2) For that matter, especially don't do anything to compromise the security of your ASU or Campus ID numbers--they can be used to for identity theft or invade your privacy. For instance, DO NOT SEND ME YOUR ID'S BY EMAIL--I don't need them to interact with you and email is an inherently insecure form of communication.

3) The first homework assignment is sections 10.1 and 10.2, which due on Friday January 18 at 11:59 PM.